Necklace aids child vaccination

Appropriate Technology Design Course Product: Around 1.5 million children die around the world every year from diseases that could be prevented through vaccination. India has one of the lowest vaccination rates in the world at under 60% - well below the World Health Organization's 90% target. But in rural Rajasthan, a simple necklace - which contains a child's vaccination records in a computer chip - is helping boost the numbers protected.